Uxcell  a11060300ux0553 Plastic Wheel Fixed Swivel Caster Set, 1-Inch, White, 4-Piece Product Name : Caster Wheel;Material : Plastic, Metal;Color : White, Silver Tone Wheel Size : 1inch x 0.5inch ;Screw Holes Distance : Swivel Caster: 1inch x 0.7inch (LW) ; Fixed Caster: 0.9inch : Fixed Caster: 0.9inch Total Height : Swivel Caster: 3.8cm / 1.5inch;Fixed Caster: 3.8cm / 1.5inch : Fixed Caster: 3.8cm / 1.5inch;Weight : 115.7g Package Content : 2 x Swivel Caster;2 x Fixed Caster : 2 x Fixed Caster